156.40.0.0/16
🇺🇸CIDR
156.40.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇺🇸 United States
City
Bethesda
RIR
RIPE
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 156.40.0.0/16 | AS3527NIH-NET - National Institutes of Health | No ROA | RADB | 5/31/2026 |
Covering Prefix
6 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 156.40.98.0/23 | AS30387NIH-NET-NCCS - National Institutes of Health | Valid | — | 5/31/2026 |
| 156.40.95.0/24 | AS19050TIC-DHHS-INTERIOR - U.S. Department of Health & Human Services | Valid | — | 5/31/2026 |
| 156.40.94.0/24 | AS19050TIC-DHHS-INTERIOR - U.S. Department of Health & Human Services | Valid | — | 5/31/2026 |
| 156.40.93.0/24 | AS19050TIC-DHHS-INTERIOR - U.S. Department of Health & Human Services | Valid | — | 5/31/2026 |
| 156.40.197.0/24 | AS19050TIC-DHHS-INTERIOR - U.S. Department of Health & Human Services | Valid | — | 5/31/2026 |
| 156.40.53.0/24 | AS30387NIH-NET-NCCS - National Institutes of Health | Valid | — | 5/31/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS3527 | RADB | MAINT-AS10886 | 11/13/2023 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 156.40.0.0/18 | AS3527 | 🇺🇸US | allocated |
| 156.40.128.0/18 | AS3527 | 🇺🇸US | allocated |
| 156.40.224.0/19 | AS3527 | 🇺🇸US | allocated |
| 156.40.96.0/19 | AS3527 | 🇺🇸US | allocated |
| 156.40.64.0/20 | AS3527 | 🇺🇸US | allocated |
| 156.40.208.0/20 | AS3527 | 🇺🇸US | allocated |
| 156.40.80.0/21 | AS3527 | 🇺🇸US | allocated |
| 156.40.200.0/21 | AS3527 | 🇺🇸US | allocated |
| 156.40.192.0/22 | AS3527 | 🇺🇸US | allocated |
| 156.40.88.0/22 | AS3527 | 🇺🇸US | allocated |
| 156.40.94.0/23 | 🇺🇸US | allocated | |
| 156.40.198.0/23 | AS3527 | 🇺🇸US | allocated |
| 156.40.92.0/24 | AS3527 | 🇺🇸US | allocated |
| 156.40.197.0/24 | AS19050 | 🇺🇸US | allocated |
| 156.40.196.0/24 | AS3527 | 🇺🇸US | allocated |
| 156.40.93.0/24 | AS19050 | 🇺🇸US | allocated |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/156.40.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/156.40.0.0/16" | jq
External Links